Implement the skeleton of an android content shell.

content/shell/shell_main_delegate_android.cc

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "content/shell/shell_main_delegate_android.h"
+
+#include "base/android/jni_android.h"
+#include "base/file_path.h"
+#include "base/logging.h"
+#include "base/path_service.h"
+#include "content/public/browser/browser_main_runner.h"
+#include "ui/base/resource/resource_bundle.h"
+
+// ShellMainDelegateAndroid is created when the library is loaded. It is always
+// done in the process's main Java thread. But for non browser process, e.g.
+// renderer process, it is not the native Chrome's main thread.
+ShellMainDelegateAndroid::ShellMainDelegateAndroid() {
+}
+
+ShellMainDelegateAndroid::~ShellMainDelegateAndroid() {
+  NOTREACHED();
+}
+
+int ShellMainDelegateAndroid::RunProcess(
+    const std::string& process_type,
+    const content::MainFunctionParams& main_function_params) {
+  if (!process_type.empty())
+    return ShellMainDelegate::RunProcess(process_type, main_function_params);
+
+  // If no process type is specified, we are creating the main browser process.
+  browser_runner_.reset(content::BrowserMainRunner::Create());
+  int exit_code = browser_runner_->Initialize(main_function_params);
+  DCHECK(exit_code < 0);
+
+  // Return 0 so that we do NOT trigger the default behavior. On Android, the
+  // UI message loop is managed by the Java application.
+  return 0;
+}
+
+void ShellMainDelegateAndroid::InitializeResourceBundle() {
+  FilePath pak_dir;
+  DCHECK(PathService::Get(base::DIR_ANDROID_APP_DATA, &pak_dir));
+  pak_dir = pak_dir.Append(FILE_PATH_LITERAL("paks"));
+
+  FilePath pak_file = pak_dir.Append(FILE_PATH_LITERAL("content_shell.pak"));
+  ui::ResourceBundle::InitSharedInstanceWithPakFile(pak_file);
+}